Moncrieff Deborah W, Musiek Frank E
Department of Communication Sciences, University of Connecticut, Storrs, USA.
J Am Acad Audiol. 2002 Sep;13(8):428-37.
Normal and dyslexic right-handed children were assessed with three dichotic listening tests, the Dichotic Digits test, the Competing Words subtest of the SCAN, and the Dichotic Consonant-Vowel test. Performance was measured as both number and percentage of correct responses in the right and left ears. Laterality was defined as a simple difference in percentage between the two ears. Differences across the tests were revealed for all children, with the greatest differences occurring for left-ear responses. Only one dichotic listening test, Competing Words from the SCAN, produced a consistent right-ear advantage across all of the children tested. Between groups of children, differences in performance and in laterality were demonstrated. Using a criterion of poorer than 76 percent correct for the left ear, the Competing Words subtest of the SCAN identified 7 of the 10 dyslexic children as abnormal, with no false alarms in the control group.
使用三项双耳分听测试对正常和患有阅读障碍的右利手儿童进行了评估，这三项测试分别是双耳数字测试、SCAN中的竞争单词子测试以及双耳辅音-元音测试。通过右耳和左耳正确反应的数量及百分比来衡量表现。偏侧性被定义为两只耳朵之间百分比的简单差异。所有儿童在各项测试中均显示出差异，左耳反应的差异最大。在所有接受测试的儿童中，只有一项双耳分听测试，即SCAN中的竞争单词测试，呈现出一致的右耳优势。在不同儿童组之间，表现和偏侧性存在差异。以左耳正确率低于76%为标准，SCAN中的竞争单词子测试将10名患有阅读障碍的儿童中的7名判定为异常，而在对照组中没有出现误判。
